The surviving child of a horrific house fire in the New South Wales Hunter Valley doesn't know her three siblings have died, as she and her mother remain in hospital.
Twin sisters Matylda and Scarlett, aged five, and their 11-year-old brother Blake died after flames engulfed their home in Singleton at around 3.30am on Wednesday.
Heroic neighbours used garden hoses to save the children's mother, Kara Atkins, 31, and her daughter Bayley, 8, but the twins died in hospital, while Blake died inside the house.
The family said Bayley is still in shock, and is processing what happened last night.
'I've just spoken to her grandmother and she said she is sitting up in hospital watching TV, she doesn't know what's going on, she doesn't know she's lost her family, she doesn't know she has lost her brothers and sisters,' cousin Gary Bates told the Daily Telegraph.
Scroll down for video
Twin sisters, aged five, and their 11-year-old brother died in the fire at around 3.30 on Wednesday morning.
Ms Atkins is at John Hunter Hospital with burns to her body, while Bayley is being treated for smoke inhalation.
Mr Bates' wife Debbie Garland said the grandmother of the children is distraught.
'I was just speaking to Kara's mum, she said "I've just lost half my grandchildren in one day",' Ms Garland said.
'All we know is Bayley is in hospital, she is oblivious to what has happened, she doesn't know. She is in hospital, she must be in shock.'
Police were seen leaving house with a heater on Wednesday night before taking it away in the back of a trailer, as it's revealed investigators suspect the blaze may have started in the wood combustion heater.
According to NSW Fire and Rescue, the heater will play a role in helping investigators piece together what caused the deadly inferno - which is believed to have started in the front of the house and moved to the back.
A string of fires in the Hunter Valley region were caused by fireplaces and heaters recently, as residents try to keep warm with plummeting temperatures.
Tributes for the three children are being placed outside the burnt out home - among them was a photo of Blake in his local team's rugby league jersey, with letters from the community.
The inferno started at the front of the home on Brittliffe Close in Singleton about 3.30am on Wednesday, and spread quickly through the rest of the home.
Mother Kara Atkins, 31, and her eight-year-old daughter Bayley were dragged to safety by heroic neighbours
Twins Matylda and Scarlett, six, were taken to hospital, where they were pronounced dead, while 11-year-old Blake (left) was found dead inside the home
A GoFundMe has been launched by family friend Caitlyn Stemmer to help the family, who in addition to losing three children, have lost all of their belongings and their home.
She told Daily Mail Australia she was not surprised to see how quickly donations had flooded in, noting it was 'pretty standard for Singleton' to help out their own.
'I don't have much to say, there's not really words for a situation like this,' she said.
'Money should be the least of their worries, I'm glad the community has come together to support the family.'
The inferno started at the front of the home on Brittliffe Close in Singleton about 3.30am on Wednesday, and spread quickly through the rest of the home
Terrified residents woke up in the middle of the night to piercing screams coming from the home, and while some dashed in
